Boiler



July 2l, 1931. DAVIDSON 1,815,882

l BOILER Filed May 16, 1929 2 Sheets-Sheet l 1931. l.. DAVIDSON 1,815,882

BOILER Filed May 16, 1929 2 Shees-Sheet 2 Patented Jelly# 21,1931' {Louisnnvrnson; or PMLADELPHIA, ,PENNSYLVANIA '.,BOILER j Aiipneaibn kfiled Mm/'16, 1929. f sealen. $3,164! y 'y invention @mme toners Whitt arek yadopted*for njse forthe generation ofstearn ory for thefheating of Witten-either the steam `or, thel'vva-ter being employed in Qsnch """5 mannerfand forslrolrpnrposes as are the hotl f Water and" steafrn: produced by boilers of con- -strtrotionslheretofore,known and in use. f 'i'"TheoMectsjoftheinventionfare to proi, o vide a boiler of sirnpl'ey construction whereby "40 itrn-ay Vbey prodilfcedy at relatively lovv cost; to 'i 'provide a .b'oilferjhaving 'means v,vv'hereby a Wi'deor large area/of' surface is presented. and *to 'that lend the-'passageway for i t'lie'heating' flamefromthe heating furnace "15 is, of tortuous characteryto provide nleans whereby a relative-lyA large-quantity ofvvater becontained yint-he' boiler and relatively large vportions or areas thereof siibjected to the ,heat of the fire "in the f furnacel sinfmlta'ne-y '29 oilslyjto yproviden ieans ofsiinpl'e construction i whereby the Waterr in' ltl'ieFbOiler ris l0- cated inet ony directly above thefi-re lWithiny the y"'frneee ofthe boiler e but also` isi located ,r' in' 'ateralfrelationthereto; Vand"finally[to this. poire in the eescf-peenofimy invention, n

1""h`ali proceed toadetailed deserptionr thereof wherein {jotherffobj-eets f will" be' pointedout or elise such? objectsparen-tr frernfsi-frch description. y t y order tliatltheyinvention maybe readily understood end its various praetieel,`fA advantages fully `app`51eeiated referencel should be 'li-ald "to the accompanying? drawings, wherein f. 'lieveillustratedfoneernbodirneirtA ofthe in; f f ven-tion the form at present? preferred by hlnfthe'dra-Wingsu Y p Fig.` lis'a 4viefwinl` ceri-tial;vertical section taken in a 'plane extendingfrom'front to rearoftl-refboilem i fy j Fig; Qis a vertical sectional vie-vvv taken on c 'lie'li-neQ'J-Qfof Fig.: 1;'5'` o i f f Fi 3 is a view-infelevationof an inside y portion of the strnetiire looking tovvardf the i'rglrt-inv FifgLQlgf e Win 'bei @Pf jFi-g @is avieiv; in perspective showinga Couple ofthey ilteriofrlelements 'of the structure insep'arated relation to "eaeh other#:but ready to be eachother; .if y A .A o Q Fig. kr51 is a View in perspective of two plates inspaeedrelationto eachother, YWliioliplates arevadopted to besec'nredby Welding or otherwise to the'roppojsite ends of theftwo y fry.' y*(.o .Y

noen'ibe'i-S sliofvnrinFig. 4; y j Fignw'isa" viewl showing in perspective sheets' adapted to be united andI placed around theparts shown in Figs; 4 and after assembly oftlre; latter to'form a vWater-v tight covering therefor. 'QM 'f Inthe drawings I have shown at 1 `ing'constitutingA av base for supporting boilerfstructnre, vvhich casting constitiites a support also for the Iire box 2 provided in placed cooperative relation to Supporting y the fuel' for the boiler.'

casting isl providedgwith addon'of usual construction, 4as indicated yat '4,ftli'oigh which theasliesfalling"through the girate y3 may be removed.l Although I have indil 'cated means for burning solid"` fuel',y it 'will be understood that asnitable uid consisting of maybe enployeduas either a gas'or a liquid the heatingmeans. I f n, d y Y The upper side*'o'vf'fnhe casting l in adjoim, ingvrelationto tli'eperiphral edge `tlrer'eoflis provided". with a" Channel as indicated .at 15, `which"constitutes'Yas seat for they vlovver'edge portions oftlie'si'de and `end portions ofvritle l f boiler-structure' i, l y f, J The jborlerA comprises interior co-operatmg andr compleinentaryy members A and B; i: The

Wallh'eof', as indifted at the Iefthand side L i i' of Fig. 1 of the dravvingsg` Thek depending iange portion l1: isk provided With.v an open? in g 12 in line or ,in registry with an opening lpro'vided yin the parallel outer front cover platejli of 4the boiler structure. "Theope'ne n ing thus provided is provided a frame' ymember.' A is providedwith "a horizontal botL or lining, as indicated at 15, which Vcloses the chamber between the plate 14 and the flange portion 11 to render the said chamber Y V'A at its rear end opposite the iiange 11 is pro- Y water-tight. The passageway provided by the openings 12 and 13 is adapted to be closed Vbymeans of a door, indicated generally at 16. Thelbottom plateportion V of the member Y vided with an upwardly extending portion 17 which terminates in a reversely extending horizontal narrow'portion18 .from the inner edge of which extends downwardly a portion 19 in parallel relation to the portion 17. The

portions 17, 18, and 19 form anelongated hollow leg portion, which I shall designate as a whole at 20. The plate is .continued to form additional upwardly projecting hollow elongatedleg-lilre portions 21 and`22. All

l of these leg-like portions, as well asthe space 23, are adapted to receive and hold water. The plate is continued toward the front of the boiler from the lower. edge of the liront side ofthe portion v22 and is then extended upwardly, as'indicated at 25, and then rearwardly, as indicated at' 26, in a plane substantially parallel with the plane of the portion n10.' Therelationship of all ot' these parts of the member A as abovedescribed, is most clearly indicated in Figs. 1 and 4 of the drawings. The member B is of a construction similar to that ofthe member A, except that the similar lparts are located in reverse relation'to theirlocation inthe member A. The member .B- comprises a `bottom horizontal plate portion 30. having depending elongated Y legflike hollow portions 31, 32, and 33 simi- .lar to the portions 20,21,.and 22 of the mem? ber The rear-endof the plate portion 3() Yterminates/in a depending flange-like portion K lar-shaped opening 3 8 therein. The said opening may be of anyY other shape which may bepreferredl When the two members A andi B are .assembled as indicated in Figs. 1 to 3 ofV thedrawingsjit'willfibe noted that the horizontal portions and 36 andthe .portions 31, 32, and 33 of the member B are 1o- Vcated in intermediate relation to the corre-v spending portions of the member A; that is to 'say,the portion 36 is located underneath and in spaced relation to theportion 26, and

the portions 31, 3 2, and33 `arelocated in spaced overlapped relation to the portions Y 22,21, and v20. By thus positioning the members Aand B and relating the portions thereof to eachother as described I have provided not'fonlyA atortuous lpassageway for the flames of the tire which may be located in thefurnace as indicated by' the arrows40, but I have also provided va large area of boiler surface to whichthe heat is applied,-whe reby a relatively large amount oi the iiame of the furnace firel is rendered effective for heat-producing purposes. v Y

A tubular member 41 of proper shape is connected at one end withinthe opening 38 and at its opposite endwithin an opening 42 within the rear side 35 of the boiler structure. A 'liu-e, a portion of which is indicatedY at 43, is connected within the outer end of the tubular member 41 for conveying away from the boiler the gases of combustion, Although the'flue is connected in the'construction illustrated with the rear wall of the boiler structure it is to be understood that the gases of combustion may be removed from some other portion of the boiler structure without departing from my invention. V

For the purpose of uniting the members A and B I haveprovidedsideplates 45and 46 which are secured to the opposite ends of the said members A and Bxby welding, brazing, or by any other method or means by which the connectionmay be rendered water and steam-tight. These plates 45 and 46 are provided respectively with openings 47 which are inV communication with the opposite ends of the spaces provided by the portion 31,32, and 33, and by the spaced relation of the plate 36 to the plate portion 3Q of the member B." Thesaid plates are also providedwith similaropenings 43 which are in'communication with theoppositeends of corresponding openings or chambers in the member A. *For the purpose of inclosing the plates 45and 46 I have provided a bent plate C, including a top portion y,5 0 and side portions51 and 52. lVhen-the latter is Lplaced in position its opposite yends are located between the parallel front and rear plates14 and 35 Sand are secured thereto, as indicated in Figs. land 2 of the drawings, lby. welding, brazing or otherwise. As already'indicated, the plates 14Vand are spaced vfrom'` thefront land rear end portions ofthe members A andBfLikewise the side portion-s 51 and 52 of thebent plate C are spaced yfrom vthe-plates and 46 previously referred to. .This spaced relation is clearly shown in Fig. 2 of the drawings. The plates 45 and 46,which are secured to the opposite ends of the members A and B as heretofore pointed out, arel connected tothe adjoining sides 51 and 52 of the bent plate C by means of interposed metal pieces 55, theopposite ends of the latter being connected to the said'- plates by spot-welding or otherwise, as may be preferred. Likewise the portions 11 and 25 of the member Ay and the portions 34 and 37 ofthe member B may be secured to the frontand -rear platesv14 and 35 by means of similar pieces 56. l

For the purpose of providing mea-ns whereby the space between the members AA @and B *may be cleanedout I have'provided the :plates v 4s6jwithope'nings 57 and158which,.`in l the assembled: structure, are located# in opvposedrelationto simil-ar' openings59 and 60 fin'theopposite sides-5l' andf52V of the'abentv pflfatefG.A Short' tubularimembers 6l are lo` {cate'dfbetween the platet'and-the portion 51 ofthe' bentk plate l C with Ytheir opposite ends securedin the openings 57 vand-59.` Only one of these tubular members .6l .isA shown, such 'showing beingfmade in Fig. 2. Similar hollow members G2-areA providedl between the i Y made in FignQ ofthe drawings.

yings kthrough these tubular members 6,1 andl iareiadapted to be 'closedfby'means of doors plat'ett and the'port'ion 520iL thebent plate y with their opposite lends secured inthe openings 58 and 60. Only one'of the tubular .members 62 isshownysuch showing.v being Theopen'- 6B?, :thesaiddoorsb-eing clamped and held in position by means/fof` nuts (tprovided detachab'ly upon the outer 'ends of bolts' 65"- lTo permit the' cleaning out ofthe space between the plateportions .ZG'fandI 3670i them-embers rkA and B I have provided the openings 66 and 66"'throufgh the plate 14 andthe adjoining portion E of the 'member "A, which openings t are'y located registry with'eaeh other. The

opposite ends of a tubular member 67 are'secured' these-'openingsz The outer end of thesaid i'tubular member. is closed by means of'adoor or closu'r`e67,A which is'adap'ted to be heldin closed position'by ymeans of holdings/means 67 oflnown construction. The

porting'an'd bracing'meansbetween the' plate' le-and the niemberrAyand. likewise lthe tubu-`r lar members 6l and Y 62 constitute addition al supporting and. bracinzgmeansbetween the the bent/plate@ .f It maybe notedthat pieoes'56 and the'connecti'ons at'lconstitutethe .means f orlsup'porting the memberkBin fixed spaced '5 relation to ythe memberA. f F

. `1l`hellowerledges fotthe'depiendinfgr ange portions klland 34er the inembersA and B, n' the lower edgesk of theplates 14 and 35, the

lower vredges of the plates efandltdand the lower edgesofthe sides 5l and 52 oir'-4r the Y' bent plate 50 are located withinthe seat5 provided in the upper: outer edge yportion Aof the base l, as above set forth.' fInorder to close the' lower sides fof the" spacesrbetween these various plates, whichrlma'y be located infparallel relation toteaeh other, the lower edges ofthe said plates rest'upon andy have Y plate'GSwhifch'- rests upon the' t@ groove Vor seat 5. Preferably'the vplate 68y liemnetieally-seafled yconnection with al' narrow bottom? of the is connected"to the loweredgesiofthe plates mentioned by being :,we-l'dedkor brazed thereto, but; any preferred'forrnfcfdconneetionmay Y f. Vbe 'ellePl-:oyed.f-A ,f if i :For the'purpose conveying'either .water at 7 2 the end portion of the return.

tuhularmember 67 constitutesadditional sup.-r

and the portions 51 and 52K- of flow oit tluid,whether water4 or steam, through ythe saidoutlet. pipe 7,0 may be controlled'by ffmeansi of 'a'valvef72- After the ,waters-0r steam which vis conveyed vfrom the boiler outwardly through the pipe 7 0 has performed its function land. given up its heat, -as for i' B f j lli 'or' steam. from the 'f boiler-,whichever ma f he desired, I have provided an outlet conduit 7 6 having connection: through an opening. in the portion of the bent plateY C.y Theout'lexample, in thevheatingof theradiators ofa f heating system, the' cooled water (the ysteam having been converted into water by ycondensation)y should be returned to the boiler",

as is the usual practice, and I havev indicated returning such water to the boiler.

In order to provide for thel safety of the l i boiler I employ a blow-out valve' at 73 yof any "usual construction.

. In order to c'ontrolthe burning of the fuel yin the` fire" box or furnace I have 'provided' a yda'mper-control valve at 74 ofknownconstruction, the movable partv of the valve "being provided Witha'n arm 75 from which a chain, cord or the like extends to an arm or pipe for lever connection to the damper.' Il" the fire j inthe fire box is burning with'suchl energy asto create a pressure either of steam ory hot water-'greater than a predetermined! -marcimum, the valve at 74 would be operatedfto etteet movementv of the effect ymovement ot the latter nor the chain or cord connection between the sameandA the lever being shown.` 'f

provided a boiler `construction ofsheet metal armfr75- to therebyV ,v damper, neither the Y It willbe seen that by my invention I have plates,preferably steel, the abutimgedges of i i which are secured together' bym'eans ofwelding, brazing or inV any other preferred way.k f I-tfalsowill be seenlthat I yhave provided ya q generated by vided a tubular passageway by'whichtthe heating ame and hot gases of combustion are conducted through a relatively long ydisas illustrated' inl t'ancefin contact with parts of the' structure i i within which are includedportionsof watery orv the like to be heated. The latter portion of the passageway for the flame and hot gases of combustion is sorelated to the structure as toadapt it for contact with portions `of the liquidk within the boiler to 'be' heated, whereby a maximum' ofthe heat generated by the burning ofthe fuelgwithin thefre bo'X' iisk utilized in the heatingo the liquid. f y f The simplicity kof the structure embodying p my invention isi apparent, audit alsois f 'believed to be apparent.thatA the structure Y ymay be constructed' or built at af relatively the boiler as the same may be needed l have provided a valve-controlled inlet pipe 76, in-

very low cost. -Y e t .e The device is particularly-well adapted for-'the supplying of hot Water or steam for the-heating of houses, but itis-not'limited to such luse but is capable ofgeneral application for the production of heatedv water or steam for usev for anyother purposes for which'those substances may be employed.4

For the purpose of conveyingY water to dicatedin Fig. 2 of the drawings, and for the purpose of drainingthe water from the boiler I have provided Ya valve-controlled `outlet Vvpipe 77, also indicated in said Fig. 2. j

Inthe construction asillustrated it will be notedthat the liquid fluid-extends to'or substantially to the topk of the boiler, which is substantially the relationship existing between theliqnid andthe boiler when thelatterjis to be employed for the supplying of' liotjwater; but if'the boiler'is--to lbe employed for the vsupplying of steam, the water should occupy a portionvonly of the interior boiler chamber,

1 leaving theupper portion free to collect and` hold steam which may be supplied through thepipe70. g 'v Y Havingthus described my invention, what l claimV and desire Ato secure by LettersPatent 1s: 1 e f l l l.l A boiler of the character described, comprising 'sheetmetal plates securedy together' in' edge-toedgel relation to each other to form a chamber, sheet metal members located'within and supported uponrthe said I sheet metalplates, said kmembers consisting of plates bent transversely at an intermediate portion thereof, ,and the opposite `sides ofthe said lloent portions occupying positions in parallel spaced relation to each other andone of the sides ofeachof the said members being provided with hollow portions which project laterally therefrom, the spaces thus produced being adapted to hold a liquidxand each of the said members terminating atone end in a dependingflangeand one ofthe saidV members yhaving a horizontally extending portion located above and in parallel relation tothetopside of the other of said members,the projections from the said members j extending in opposite directions and in alternate spaced" relation with respect to each other thereby forming aftortuous passageway through whichthe flames andthe gases of combustion travel.

Y .2. A boiler ofthe character described, comprising sheet metal plates secured together in edge-to-edge relation to each other to'form av chamber, sheet metal members locatedwithin and supported upon the said sheet metal platesyeach of the said members consisting of plates benttransversely at an intermediate portion thereof, and the opposite sides of the vsaidbent portions occupy- VVing positions` in parallel spacedv relation to eachother and one of the sides of each ofthe said members beingV provided rrwith'ho-llow portions which project'V laterally therefrom, the spaces thus produced being adapted to hold a liquid-and eachv of the said members terminating at onek endiin a depending flange and one of the said members having a horizontally extending portion located above and in'parallel relationrto the top-side of the other of saidmembers, the projections from the'V said members extending in opposite directions and in alternate spaced relation with respect to each other thereby forming-a tortuous vpassageway v'throughV which the f flames and the gasesof combustion travel,

and afuel-burning means located directly und'erneaththe said two members.` i v SBA boilery of thecharacter described, comprising interior metal plate members cach of which comprises a narrow chamber extending horizontally of the boiler, the said Vchambers being formed-by parallel portions of .parts of each member, hollow projections extending laterally from one side of Yeach of the said members, said projections extending in opposite directions and in parallel spaced Voverlapping relation to each other and each of the' said `members beingprovide'd with a depending flange portion located in spaced relation to the exterior portion of the boiler,

and one of the said membersprovided with an vintermediate portion whichv extends in parallel relation to and adjoining an exterior wall portion lofthe boiler, and a horizontally extending portion which is located above and infspaced relationY to thev uppermostV of the Vsaid two members.

.e l; ,A boiler of the`v character described, comprising interior metal plate members each of which comprises a narrow chambervv extending horizontally of the boiler, the said chambers being formedby parallel vportions of parts of each member,hol'low projections extending laterally from one side ofeach ofthe said members, said projectionsextending in opposite directions and in vparallel spaced overlapping vrelation to each other and each of the said members being provided with a depending flange portion located-Yin spaced relation to thev exterior portion ofthe nameservranged lin spaced relation to each otherv and extending transverselyland horizontally ofy the said boiler and said members being pro# kvidedlwith. hollow elongated. projections extending therefrom7 in opposite directions 4and inalternate spacedrelationy to each other and cooperating with eachotherand with .the main portions of the said members to form a tortuous passageway extendingacross the said boiler, and each of said members having at one side 'thereof a dep-ending flanger portion located inspaced relation to an adj'oining. portion ofthe'outer wall of vthe boilerand one of ythe* said membershaving u anl upwardly extending intermediate portionL arranged in vparallel spacedrelation to a por'- tion ofthe outer adjoining wall and a horizontally extending portionvlocated in spaced relation to and 'above' the-upper'of said members,-platessecured to theoppositeends of said members wliich'plates nare provided with openings in registry with the interior chambersffof Ythegsa'id members, andmeans for Y rigidly connecting the said members and the said vplates with adjoining portions'of the exterior wall structure of theboiler.l

6.V A boiler comprising an exterior of sheet f metal plates united at their edges to form an interior chamber, two liquidi-receiving `mem- 13 bers located within said chamber,y said niem-` bersr'each comprising parallel portions arranged in spaced relation yto each other and extending transversely and horizontally of the saidv boiler and said members being provided .y with hollow elongated projections extending therefrom,r in opposite directions and vin, al'- ternate spacedrelation to eachother and cooperatingwith each otherfand with the main yportions of the said members to form' atortuous passageway extending across ythe said vkboiler,V and each of said 'members' having at one side thereof adepending fiangefportion y located yinv spacedrelation toan: adjoiningk portion of 'theouter wallof therboiler and one of the saidmembers having auf-upwardly extending -intermediate portion yarranged invpara'llel spaced relationto aportion of the outer adjoining wall and ahorizontally .l extending portion located yin spaced relationV f Vto vand Vabove thekupper of said members', v plates secured to the opposite ends of said Vmembers which plates are provided with openings in registry 'with the interior cham- A bers 'of Vthe said members', means for yrigidly connecting the said members and they said'l plates with adjoining portions of the exteriory wall structure ofthe boiler, and ineansfor closingthe loweropen endsof the spaces betweenV the exterior wall of ythe vboiler andy 1 the A,depending flange c portionsjof the said Y lmembers and ofthev platessecured tothe op-` posite ends of the latter. c

i 157'; Y boilery comprising interiorly 3thereof two members adapted ltojhold-@water yto be heated by vthe'rheat generated from" burning e therefrom in-spaced;relation tov each other toprovide,

fueLeach ofV whichmembers consists of'plats a chamber thereinand eachfof thelsai-d mein-l ber-sy, having therefrom in yhollow `projections extending substantially-right re-r c lation thereto and eachofthesaidmembers having -afdepending flange portion whichfex- ;k

tends from one' side thereof' in parallel nel; lationfto the adjoining portion of an exterior: y i n waglljof; thesaidV-fboiler and one ofthe .said

members having 'an intermediate portioiillo'-l cated in lparallel` relation Lto;` the 'adjoining lel relation to the said twoparallel plate portions ithereof,l andl means for supporting the yportion ofan .exterior Vwall of the said boiler f 'and also havinga portion extending in'piaral-f; i

said members with the parallel plates 'offonez f lin parallel relation tothe parallel plates of the other member and with the lateral projections thereof extending in opposite direc-V tions alnd in spaced overlapping relation to each other.

tivo members which extend acrossthe said boilerand are adapted to hold waterto be heated' by the heat generated from burning fuel, each ,of which members consists of plates Vin spacedrelation to each other to provide a chamber therein and each of the said members having hollow projections extending having a depending flange portion which extends fromfoneside thereof in parallel re-y lation tothe adjoining portion of an exy8. A boiler comprising interiorly thereof ik y in substantially right angular rev y lation thereto and each of the said'members iop terior wall of the said boiler yandwone of the said members having an intermediate por-k ytion located in parallel relation to the adj oining yportion of an exterior wall of the said boiler and also having a portion extending in parallelrelation to the said two parallel plate portions', thereof, ymeans for supporting the said members with the parallel plates ofone in parallel relation to the parallel ,plates of the other member and with the lateral pro# yjections thereofextending in opposite directions and in `spaced overlappingrelation to each other,and fuel-burning means located underneath the said members, the space be-y` tween the two parallelportions of the said members and between the projections extending therefrom in overlapped relation to each other constituting a tortuous passageway Afor the flames and gases of combustion generated y Y 12e ,y

by theburningffueh y y .Y

9. Aboiler comprising an exterior wall inclosing a chamber, members located Within said chamber,y said lmembers ycomprising liquidholdiiig chambers and each; of the said members having a depending flange portion located in spaced parallel relation to an adjoining portion of the exterior wall of saidvboiler and oneof the said members havj ing an upwardly extending intermediate portion arranged in a plane substantially coinrcid'ent; with the 'plane of the flange portion* spaced 'substantially parallel relation to the'y y adjoining exterior Wallportions,emeans for I rigidly connecting thek said flange portions and;intermediateportion of the said mern-v Y Y bers and-the said plates tothe said adjoining Yportions ofthe Yexterior Wall, and means for olosizng the lower endsof the spaces between Y the said flange portions and the said platesk y and the exterior 'Wall of the said looiler.'

- In testimony that Il olaiin the foregoing as myinvention I have hereunto 'signed my lname this 10th lday'of May, A. D. 1929. y

, p. LOUIS DAVIDSON. 

